20=4f+(-10)

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Solution for 20=4f+(-10) equation: 



20=4f+(-10)

We move all terms to the left:

20-(4f+(-10))=0



We calculate terms in parentheses: -(4f+(-10)), so:

4f+(-10)

We add all the numbers together, and all the variables

4f-10

Back to the equation:

-(4f-10)



We get rid of parentheses

-4f+10+20=0

We add all the numbers together, and all the variables

-4f+30=0

We move all terms containing f to the left, all other terms to the right

-4f=-30

f=-30/-4

f=7+1/2

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